The Maternal line/side of the pedigree is more important to us than the paternal line. Through practical research and observation of both the dairy and beef cattle industry over the last 30+ years, we have noticed along with many others that certain maternal lines sort themselves to the top in their ability to transmit genetic improvement to the next generation. This is most
noticeable when examining the top-ranking sires of a breed over a period of years. A fantastic example of this in Wagyu is the Hikokura maternal line has produced numerous top-ranking bulls on the Australian system.
The exact science behind this trend is still not fully understood, but the bottom line is that 1+1 doesn’t = 2 in genetics. More often than not the female has a stronger influence on the performance of the offspring than the male she is mated to (think female contributes more DNA “that matters” than the male does). Some possible explanations for this are mitochondrial DNA inheritance comes from the female only, cytoplasmic inheritance, and epigenetics which are inherited and triggered from the maternal environment provided by the dam.
This is why we have chosen to work with the Suzutani, Hikokura, Yuriko, Okutani,
Hatsuhi, Chisahime, Chiyotake, Aizakura, Kikuhana, Kanetani, and Yasuyoshi maternal lines. By using these maternal lines and their proven ability to transmit superior genetics and combining them with sire stacks of high reliability, high ranking and performing proven bulls we are taking as much risk and chance out of the genetic equation as possible!!